I am typing this on my X. I love this thing!!! My wife got the Incredible, and she definitely has phone envy every now and then. However, she does not like the larger size of my phone. It doesn't bother me a bit, and it actually fits my pocket better than my old curve, due to its slim profile.
I have a "system" for pockets though. Only my phone goes in the left pocket. Pen, knife, and keys in the right, and wallet in back or side/knee area if I'm wearing cargo style pants.
If you spend time youtubin', gaming, or typing a lot, I vote Droid X.